protected File getCwd() {
        return new File(baseDir, 'cwd')
    }

    /** Returns the file the process writes its pid to. Defaults to "pid" inside baseDir. */
    @Internal
    protected File getPidFile() {
        return new File(baseDir, 'pid')
    }

    /** Reads the pid file and returns the process' pid */
    @Internal
    int getPid() {
        return Integer.parseInt(pidFile.getText('UTF-8').trim())